Sonic Drive-In - Oklahoma's Official Travel & Tourism Site

Oklahoma Tourism and Recreation Department

Destination Oklahoma

Sonic Gore's Travel Plaza

OPINION: Sonic's storied history deserves to be told better than a misleading sign, Opinion

Oklahoma Sonic celebrates re-opening of the very first Sonic Drive-In

SONIC® Drive-In Celebrates Groundhog Day

SONIC DRIVE-IN, Tulsa - 1919 S Memorial Dr - Photos & Restaurant Reviews - Order Online Food Delivery - Tripadvisor

Fun Facts You Didn't Know About Sonic, America's Drive-In - Thrillist Nation

Sonic Drive-In - Oklahoma's Official Travel & Tourism Site

Sonic targets smaller communities in Texas and Oklahoma

Sonic Corporation: total assets 2018